Spark-preventer for locomotives.



' PATENTED APR. 10, 1906. D. DRUMMOND. SPARK PREVENTER FOR LOCOMOTIVES.

APPLICATION TILED, DEO.12,1906.

D. N @W M s VU mR D D Am G T e WITNESSES;

ms ATTORNEY.

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SPAHW-PREVENTIER FOR LOCOMOTIVES.-

Specification of Letters Patent.

Patented April 10, 1906.

Application filed December 12, 1905- Serial No. 291,372.

To all whom it may concern:

Be it known that I, DUGALD DRUMMOND, a subject of the King of the UnitedKingdom of Great Britain and Ireland, residing at Surbiton, Surrey,England have invented a certain new and useiful Improvement in Spark-Preventers for Locomotives, of which the following is a specification.

This invention relates to s ark-preventers for locomotives; and it hasEn its object to make fuller provision against liability of live sparksor cinders drawn by the blast through the fire-tubes passing from thesmoke-box out of the funnel or chimney.

The invention is illustrated in the accompanying drawings, in which-Figure 1 is a longitudinal vertical section of the smoke-box end of alocomotive-boiler, showing the improved spark-preventer fitted thereinaround the upper end of the blastpipe. Fig. 2 is a cross-sectional viewthereof, and Fig. 3 is a plan view of the spark-preventer.

According to the present invention and as shown by these drawings twosets of side Wings A A are fitted in the smoke-box B, ex-

tending from the blast-pipe C parallel with the tube-plate D, the upperwings A being stationary and being addltional to the lower wings A,pivoted heretofore at a, so as to be adapted to fold or swing upward toallow of access for cleaning the lire-tubes E.

In the stationary wings A, outside of which the movable wings A areswung, a series of bathe-plates F F are secured the said plates beingbent at their ends to form flanges F which are riveted or bolted to theinside of the wings. The baffle-plates F F are set at an inclination andare so arranged that a lower series F extends into spaces between anupper series F and the whole serve to intercept the direct outflow ofthe Waste firegases which are compelled to traverse a sinuous course.Any live sparks or cindcrs drawn through the fire-tubes strike againstthe baffle-plates F F and. drop therefrom into the lower part of thesmoke-box, from which the colllecting material may be removed periodicaly.

Having now described my invention, what I claim, and desire to secure byLetters Patent of the United States, is-

A spark-preventer for locomotives comprising, in combination, with thesmoke-box and blast-pipe and wings pivoted on either side of the latter,of stationary side wings located above said pivoted wings and connectedtogether by bafile-plates set at an inclination to cause the fire-gasesflowing toward the chimney to traverse a sinuous course.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

DUGALD DRUMMOND.

WVitnesses:

CHARLES GALL WATT JOHN HAZELDINE.

